I have an Intermatic programmable timer for my backyard ground lights. Total of eight lights. My timer is not keeping time. Is it fixable or does require replacing the timer box?

Hi, my name is Shaun. Welcome to Fix-Ya! I will do my best to help you out. I have been an electrician for seven years and have seen several problems with Intermatics similar to yours. Ninety percent of the time, the end result is that the gears are stpipped and the "guts" need replaced. But if you don't have any guts laying around, you will have to replace the timer. Here are a couple of things to check before replacing your unit. 1) is the timer moving at all? If not, place a voltmeter on the leads that feed the timer's electic motor and make sure it is getting voltage. If it is, disconnect those leads and swith the voltmeter over to continuity, or Ohms. Place the probes on both leads going to the motor and check for continuity. You should hear a "beep" if your meter has this capability. If there is none, the motor is bad and the timer needs replaced. 2)Look VERY closely at your timer. You should see a hole where you can shine a flashlight into to observe the gear movement. If you see no gear movement, this could be a result of stripped gears or a bad drive motor, both of which require a replacement unit. Hope this helps in some way. Best of luck, and have a great day! By the way, if you need more detailed instructions on how to teast voltage or continuity,, feel free to reply to this answer. I would be happy to walk you through it.